Bulk Heterojunction Solar Cell with Nitrogen-Doped Carbon Nanotubes in the Active Layer: Effect of Nanocomposite Synthesis Technique on Photovoltaic PropertiesReport as inadecuate




Bulk Heterojunction Solar Cell with Nitrogen-Doped Carbon Nanotubes in the Active Layer: Effect of Nanocomposite Synthesis Technique on Photovoltaic Properties - Download this document for free, or read online. Document in PDF available to download.

1

School of Chemistry and Physics, University of KwaZulu-Natal, Private Bag X54001, Durban 4000, South Africa

2

Department of Applied Chemistry, University of Johannesburg, P.O. Box 17011, Doornfontein, Johannesburg 2028, South Africa





*

Author to whom correspondence should be addressed.



Academic Editor: Klara Hernadi

Abstract Nanocomposites of poly3-hexylthiophene P3HT and nitrogen-doped carbon nanotubes N-CNTs have been synthesized by two methods; specifically, direct solution mixing and in situ polymerization. The nanocomposites were characterized by means of transmission electron microscopy TEM, scanning electron microscopy SEM, X-ray dispersive spectroscopy, UV-Vis spectrophotometry, photoluminescence spectrophotometry PL, Fourier transform infrared spectroscopy FTIR, Raman spectroscopy, thermogravimetric analysis, and dispersive surface energy analysis. The nanocomposites were used in the active layer of a bulk heterojunction organic solar cell with the composition ITO-PEDOT:PSS-P3HT:N-CNTS:PCBM-LiF-Al. TEM and SEM analysis showed that the polymer successfully wrapped the N-CNTs. FTIR results indicated good π-π interaction within the nanocomposite synthesized by in situ polymerization as opposed to samples made by direct solution mixing. Dispersive surface energies of the N-CNTs and nanocomposites supported the fact that polymer covered the N-CNTs well. J-V analysis show that good devices were formed from the two nanocomposites, however, the in situ polymerization nanocomposite showed better photovoltaic characteristics. View Full-Text

Keywords: polythiophene; nitrogen-doped carbon nanotubes; nanocomposites; photovoltaic properties polythiophene; nitrogen-doped carbon nanotubes; nanocomposites; photovoltaic properties





Author: Godfrey Keru 1, Patrick G. Ndungu 1,2, Genene T. Mola 1 and Vincent O. Nyamori 1,*

Source: http://mdpi.com/



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